The Shadow SH 099 is a passive piezo pickup for nylon string classical and steel string acoustic guitars. It fits classical and acoustic steel string guitars with a standard bridge slot width of 2.3mm. (3/32"). The pickup installs under the original saddle and is only 1.8mm thick.
Pickups measurements: 70.2mm L x 2mm H x 2.3mm W (approx. 2.75" L x 0.079" H x 0.090" W). Made in Germany.
Shadow SH 099 Installation Manual